No matter where you live, getting rid of a grub infestation is both frustrating and time-intensive.
Like many other lawn pests, grubs are best stopped with actionable prevention steps. However, you may want to incorporate some long-term grub preventer products that eliminate infestations before they begin.
- 1 What Are Grub Worms?
- 2 What Are White Grubs?
- 3 Types Of Grub Worms
- 4 Lawn Grubs Lifecycle
- 5 How To Kill Grubs
- 6 How To Prevent Grub Worms
- 7 Lawn Grubs FAQs
- 8 How to Kill Grubs
- 9 Summary
What Are Grub Worms?
White grubs are the larvae of seasonal lawn beetles that feed on grasses, roots, and other plants. A long-term grub problem could lead to significant lawn damage and the destruction of the root system for struggling plants.
Brown patches of grass created by grub worms look similar to chinch bug activity. Grub infestations could affect the quality of your grass within a few short weeks. If you think grub worms are behind the damage to your lawn, you’ll need to start applying treatments right away.
What Are White Grubs?
Although there are many different types of lawn grubs, white grubs in particular refer to the larvae of Japanese beetles. These pests lay eggs in moist soil during the spring and grow to maturity by late summer. Once they have reached adulthood, they will begin to feed on leaves, fruits, and vegetables around the lawn.
A few grubs are not likely to cause problems in your lawn, but a larger grub population will make short work of your garden, landscape, and grasses.
Types Of Grub Worms
There are several types of grub worm species you may find around your backyard:
- June Bugs / June Beetles
- Japanese Beetle Grubs
- Scarab Beetles
In order to get rid of them completely, homeowners need to control both adult and larvae versions of the grub worm’s life cycle.
Lawn Grubs Lifecycle
Lawn grubs have a unique lifecycle that is difficult to treat without previous knowledge.
Adult beetles can be found laying eggs between the months of June and August. After two weeks, larval grubs hatch en mass, and burrow deeper into the soil to overwinter. When spring returns, the grubs in your lawn will return to the upper levels of soil to feed on grass roots. Grubs enter a pupation stage that lasts two to three weeks before hatching into fully grown adults.
June bugs have a lifecycle that lasts up to three years, while others may be much shorter. In general, expect grubs in your lawn to live at least one year on average.
How To Kill Grubs
The most efficient way to kill grubs is through a combination of DIY, prevention, and natural grub treatment. Using chemical methods, the five best products for killing grubs include the following:
- Acelepryn is an all-encompassing insecticide that controls grubs in just a few applications. Apply in the spring.
- Dylox is one of the best forms of curative pesticide on the market today, making a massive difference against grub larvae during hatching seasons. Simply apply this grub killer to your lawn during early fall or early summer, and watch the results roll in.
- For a rapid grub killer that protects your grass, consider utilizing the Bayer 24 Hour Grub Killer Plus. Using a powerful form of Trichlorfon, this product swiftly eliminates grubs at any stage of maturation.
- Meridian 0.33 G Insecticide is great as a broad-spectrum insecticide, eliminating Japanese beetles, sod webworms, June bugs, and more. Apply in the spring for prevention.
If you’re concerned about chemical use, most lawns can benefit from natural methods or organic curative pesticides. Treat your lawn naturally by correctly applying fertilizer, lime, and other health-supporting products during key times of the year.
Consider using a topical applicant such as neem oil. Neem oil kills lawn grubs by penetrating their thin, rubbery bodies and impeding their growth.
Attracting predator pests such as house wrens or parasitic worms are great methods of managing a pre-established grub problem. Install birdhouses around the property to house hungry birds, and provide spaces in your lawn for other grub predators such as wasps.
Finally, milky spore disease is one of the best ways to prevent grubs from pupating in late summer. Bacterium capsules can be purchased in bulk and sowed throughout the lawn before July. Milky spore is an insect killer of impressive strength, and will quickly eliminate grubs before reaching adulthood.
How To Prevent Grub Worms
Prevention against grub worms begins with cultural and organic controls.
Start by locating the presence of adult beetles and other grub problems around the lawn. Keep an eye out for some tell-tale signs of a grub infestation, including:
- Brown or damaged grass
- Ongoing garden or lawn damage
- Sections of dry lawn (dead patches)
- Spotting grubs in the soil while planting or digging
Immediately begin incorporating best grub prevention practices, including the attraction of house wrens, applying milky spore, and natural treatments like neem oil or dish soap mixed with water.
Lawn Grubs FAQs
Are grubs resistant to some chemicals?
Sadly, grubs can and will develop a resistance to certain treatments. According to some golf courses, the popular chemical Imidacloprid is no longer effective against most grub infestations. However, proper follow-up treatment (including watering down your insecticide) could help to boost numbers.
How do you get rid of grubs naturally?
The grubs in your lawn can be eliminated with natural methods like applying milky spore, attracting house wrens and predatory birds, and over-the-counter grub killers including neem oil. These products are available in many garden stores, including large retail brokers like Home Depot or Lowes. If you’re up for the challenge, beneficial nematodes are another excellent option. Just be sure you are applying the right amount per square foot.
What is the safest way to get rid of grubs?
The best and most efficient method of grub elimination is ongoing prevention. Although certain chemicals will kill grubs guaranteed, regular applications of natural treatment may work wonders around the lawn. Focus on lawn care and health for the long term, and enjoy ongoing results over time.
How to Kill Grubs
If you missed the window to prevent white grubs and are seeing visible grub worm damage, you need a fast-acting curative. The best product to use is Dylox. The active ingredient Trichlorfon needs to be watered in immediately to begin activating. Once it’s in the soil and taken into the roots, Dylox quickly kills grubs then degrades quickly.
Grub worms can do extensive, irreversible damage. If you plan on having a healthy, vigorous green lawn, be sure to stay ahead of these pests by applying a preventative application of Acelepryn in the spring. If you or your neighbors have had a history of grub problems in the past, this is a very important step.
If you missed the window or are noticing active grub damage, use a fast-active grub killer – we highly recommend Dylox. Once the grubs have been knocked down, you can begin repairing and reseeding the dead areas.
What are the best products to kill grubs in lawn?
The best products to kill grubs in your lawn contain the active ingredients Carbaryl (Sevin)
or Trichlorfon (Dylox). Products like Jonathan Green Grub & Insect Control contain Imidacloprid & Lambda-Cyhalothrin which can be used to kill grubs, but only in the early larvae stages, but is best used as a preventitive.
What are the best products to prevent grubs in lawn?
How do grubs damage your lawn?
Grubs are the larvae of the Japanese beetle (June bug). As the larvae hatch, they begin to eat the roots of your grass – not the grass blades themselves (those are chinch bugs). As the grubs finish eating the roots, they move outwards to more roots. This causes the irregular dead brown patches of grass.
What are grub worms?
Grubs are most commonly the larval stage of the European chafer, June beetle (June bug) and Japanese beetle. Adult beetles lay their eggs in the early summer in June and July; larvae hatch and begin to eat the grass roots throughout the summer and into early fall; grubs reemerge in the spring overwinter, pupate in late May and into June, and the lifecycle begins all over again.